161947-1001 Chopard The L.U.C Full Strike now appears in a new set of colors with a case in “Fairmined” certified non rhodium-plated 18k white gold, framing a silver-colored dial. This exceptional timepiece chimes the hours, quarters and minutes on transparent crystal gongs. These sapphire rings are an integral part of the watch glass, which creates a perfect loudspeaker faithfully to diffuse the chimes of the hammers striking the sapphire. The sapphire rings create a flawless crystal-clear sound, with an open worked dial and bearing the Poinçon de Genève quality hallmark. 161947-1001 Chopard 18K ethically-certified "fairmined" non-phodiumised white gold.